If "editorial" refers to an opinion piece:
* Factual: A piece that focuses on presenting objective information.
* News: A report on current events without opinion.
* Feature: A longer piece that explores a specific topic in depth, often without strong opinion.
If "editorial" refers to the act of editing:
* Writing: The process of creating original content.
* Original: A piece of content that has not been edited or revised.
* Unedited: Content that is not subjected to revision or improvement.
If "editorial" refers to the editorial department of a publication:
* Creative: The department responsible for content creation.
* Production: The department responsible for the technical aspects of publishing.
* Sales: The department responsible for marketing and distribution.
Ultimately, the best antonym for "editorial" will depend on the specific context and what you are trying to convey.